How else to explain the "Let's go, Giants" chants between songs? Or folks grooving to the beat in black-and-orange jerseys? Or the guy behind the microphone talking about winning six elimination games?

"I don't think this would happen in Cincinnati," Tim Flannery said of the Giants revelry after he played four nights with his band, the Lunatic Fringe (thank you, Brian Sabean), as a benefit to the Bryan Stow Fund.

Flannery, the Giants' third-base coach who played his final gig of the offseason Sunday in Santa Cruz, where several of Stow's relatives attended, said the weekend tour raised nearly $75,000. Afterward, he briefly spoke with Stow, the fan critically beaten at Dodger Stadium in March 2011 who's back in the hospital with a blood clot in his leg.

All four shows sold out.

"It was a great run, and the people and stories were great," Flannery said. "People came out of the woodwork to show their support and love. One guy went up to the family and donated $1,000 in cash."

Friday night at the Sweetwater in Mill Valley, the crowd was rapt when Flannery started talking about a journey that began when the Giants were down 2-0 to the Reds in the best-of-five National League Division Series - "and 21 days later," Flannery said, "I was in the best Halloween parade I'd ever been in."

It was his inspiration for the night's feature song, "21 Days," with music and lyrics written by Flannery, who prepped the crowd by mentioning Bruce Bochy's Gideon Speech in which the manager referenced the Old Testament to his players before Game 3, telling the Book of Judges story about an underdog who defeated the mighty Midianites.

"And then," Flannery continued, "all of a sudden, Hunter Pence jumps up and looks at everybody's eyes and starts pacing like Eminem, back and forth, and saying, 'I want to play for you. I gotta play for you.' "

At that point, Flannery and old pros Dennis Caplinger, Jeff Berkley, Dean Smith and Shawn Rohlf performed what could turn into the theme song of the 2012 season, about how "history will be changed tonight with our backs against the wall," how "we slammed through Cincinnati" and a final reminder, "Well, I knew the odds before me and we didn't stand a chance."

Eventually, Grateful Dead member Bob Weir joined the band on stage, a superstar who on this night wanted to be just another musician. A couple of years ago, Weir contacted Flannery and they hit it off, in and out of the studio. Before Game 2 of the NLCS, the duo joined Phil Lesh, another Grateful Dead veteran, to sing the national anthem.

"A beautiful, amazing man who wants to help the cause," Flannery said of Weir.

Flannery drove home to Southern California on Wednesday, and the next stop will be Scottsdale, Ariz., for spring training. It's back to reality, which would be a fantasy for most. Flannery's fantasy is music, and he lived it out in 27 offseason shows up and down the coast, capped by the four-night Stow benefit.

No surprise that "21 Days" got the most attention.

"We got standing ovations after the song. Places erupted," Flannery said. "I haven't had that happen before. The people in San Francisco know the story, and I tried to capture the moment and bring it back."